A world leader in innovative acoustic treatment & sound isolation solutions from Portugal
Vicoustic – Products for Better Acoustics - HiFi is never better than the room

There are two main reasons for fixing your room acoustics.

  • Nothing affects the sound from your speakers more than the room acoustics. The variation in level between two different bass frequencies can easily exceed ±10 dB in an untreated room. Some bass frequencies – called standing waves – will have a prolonged reverberation time and thus create a bass energy build-up in the room. 
  • Hard reflections off the walls, floor, and ceiling will affect your listening experience more than you think. Your brain will try to separate the hard reflections from the direct sound, but it can’t, because the reflections arrive with a very short time delay. This has a fatiguing effect on your brain, making you less creative and unable to fully enjoy your sound system. 
    The use of a digital “room correction” system might help iron out the most prominent bass frequencies in the listening position, but unfortunately it can't do anything about the prolonged reverberation time of the standing waves. How could it? By capturing the sound once it has left the speakers?
  • As soon as you walk into a room, you are subconsciously affected by its acoustic properties. If the acoustics are too busy – like in a modern café with hard surfaces and no acoustic treatment – you feel uneasy and stressed. 
    If the acoustics are too damped, with curtains and thick absorbers, you will most likely get the feeling of the walls moving in on you. 
    Either way, the acoustics will affect your sense of space in a room – for the better or for the worse.

That’s because it’s impossible for digital processing to combat hard reflections, long reverberation time and excessive bass energy build-up in the room. All it does, is to change the tonal balance of the speakers, often to the worse, leaving a slight artificial taste in your mouth. It’s much better to properly treat the room acoustics.

The goal is to make the speakers disappear and just present a wavefront of sound, a "wall of sound", if you like. High quality full-range speakers in a well-treated listening room will give you that sensation. Trust me, it’s a great experience! 

"The Vicoustic panels seemed like nothing less than an acoustic miracle workers…… the Vicoustic DC2 value for money is clear off the charts. Vicoustic say their DC2 is the best cost/performance diffuser money can buy, and until I can discover better for less I would enthusiastically concur".... Chris Martins - HiFi+ Magazine

Sound is often a bigger problem than it needs to be. Reverberation, resonances, noise and materials like glass, brick and concrete can destroy a music experience, intelligibility and comfort. Vicoustic delivers clever solutions for every situation, from demanding Hi-Fi system rooms, Recording Studios to Offices, Restaurants and Schools.

Acoustic problems can usually be rectified. The Vicoustic range of absorbers, diffusors and bass traps do the job and add aesthetic values to any environment. We have solutions in all price ranges.

The Team includes Civil Engineers, specialised in structural engineering, Designers, and Senior Acousticians. We also utilise our Research Department to develop customised products to satisfy your every need. Vicoustic has the most advanced hardware and software tools available to accurately simulate the finalised acoustic result

How do you get started?
Every room is unique and requires a bit of detective work. If you’re uncertain about where to begin, please don’t hesitate to contact one of our product specialists. Their contact information is available at the end of this document.
However, there are some very fundamental ways to get started. Read on!

Hard reflections
Sound waves will bounce off a hard surface is the same way light reflects in a mirror.bombarding the listener.

How do hard reflections affect the sound?
It takes a sound wave about three milliseconds to travel through one meter of air – which means that the reflections are slightly delayed in time when they reach the listening position. The reflections affect the frequency response, stereo panorama, depth and phantom center – making the overall sound less detailed. It’s also fatiguing listening to music in a room with prominent hard reflections.

Treating hard reflections with absorption
By using a mirror, you can easily identify the hard reflections. Have a friend or spouse sit in the listening position, then put a small mirror flat onto a wall, move the mirror until your friend can see either of the two speakers in the mirror – there’s your hard reflection. Put a small piece of tape to mark the position. Continue the routine until you have found as least one position on each side wall and two on the front wall. The ceiling will also produce hard reflections, and being the room’s largest untreated surface, it’s quite beneficial treating it with absorbers and diffusers. Putting a thick rug on the floor will also help dampen some of the hard reflections.

Attach a Cinema Round Premium panel at each marked position, and the hard reflections will be absorbed by the panel. Use double-sided adhesive tape or two small brads or nails without heads. If you use tape, the panel will eventually fall down, because it’s taped. But it’s useful for experimenting with different placement. When you have found a good spot for the absorber, use two nails/brads, nail them halfway into the wall, then push the Cinema Round Premium onto the nails. The proper way to do it, is of course to use Flexi Glue – instructions on how to use it are available on our webpage.

Treating hard reflections with diffusion
Instead of absorbing sound energy, a diffuser breaks the soundwave and spreads it in different directions – like a garden hose nozzle spread water. Diffused sound basically does not interfere with the direct sound from the speakers – as long as there’s at least one meter between the diffuser and the listener. If your listening position is close to the back wall, then it’s better to put absorbers behind you.

Basically there are two given positions for diffusers in a room – on the back wall at ear height and in the ceiling in the middle of the room. Start by positioning a small table or chest of drawers close to the back wall, then put four to six Multifuser DC2 on the table. As long as they are standing firmly on the table, it’s okay to stack them. Normally DC2s are nailed or glued to the wall – and for ceiling placement, the easiest way is to use glue in conjunction with a screw and a washer, the latter will keep the panel in place, until the glue has dried.

Standing waves
The wavelength of bass frequencies ranges from about 1.7 meter at 200Hz to about 17 meters at 20Hz. In a room with parallel walls, this will result in a phenomena called standing waves. Based on the dimensions of the room, certain bass frequencies will “stand” between the walls, ceiling and floor.

How does this sound?
When you walk back and forth in an untreated room listening to music, it feels like walking "in and out of bass" – certain bass frequencies are suddenly more prominent and then diminished at another spot in the room. As the pictures show, the worst listening position is in the middle of the room where most standing waves interact. Sitting close to the back wall will produce a natural bass boost.

But there’s more: Resonance!
Standing waves are in fact resonance frequencies, which have less friction and thus longer reverberation time. This means that the room will "harbour" the standing waves and the result is uncontrolled bass energy.

How do standing waves affect the sound reproduction?
First, they create an uneven bass frequency response that changes with the speaker and listening position. Secondly, they contribute to excessive and uncontrolled bass energy, that will mask some of the dynamics and finer details in the mid-range and treble. We like to divide the audio spectrum into different frequency bands, but our brain will interpret it as one sound where all the frequencies are interconnected. What happens in the bass frequency spectrum, will have an effect on how the midrange and treble is perceived.

So what can be done to control the standing waves?
The best way to minimize the effect of standing waves is to build a room with slanted, non-parallel walls – like a control room. However, most of us can’t afford that luxury, so the second best thing is to install bass traps.

Where should the bass traps be positioned?
The most prominent bass build-up is in the corners of the room – where several large surfaces meet – so that’s where the bass traps work as efficiently as possible.

All Products



All Products

VC 01 AP DC2
NZ$ 149.50 ea (incl. GST)
"In my room they worked like a charm, transforming a space that initially seemed like an, "acoustic problem child", .... 1st - "the charachteristic midrange and upper midrange brightness of that room...
VC 02 AP W36
NZ$ 735.00 ea (incl. GST)
Made from solid wood, the new diffuser is perfect for use in venues such as concert halls, hi-fi rooms and recording studios, where effective diffusion is often required, without too much absorption...
NZ$ 149.50 ea (incl. GST)
Vicoustic's flagship Wavewood panel has been specifically developed to treat acoustic problems without destroying a room's ambience, or over-deadening the sound. It can be used in control rooms,...
NZ$ 195.01 ea (incl. GST)
THE VIC PATTERN, WAVEWOOD-ULTRA  ABSORBER - the updated and improved vrsion of standard Wavewood absorber - a new diffuser to those who search balanced sound ambiences
Standard finishes available ex stock:     Matt White     Matt Black...
NZ$ 149.50 ea (incl. GST)
With the Wavewood design a new diffuser product arrises. Simulating a QRD and MLS sequence the new Wavewood Diffusor is an ideal solution to those who search balanced sound ambiences that...
NZ$ 165.00 ea (incl. GST)
THE VIC PATTERN WAVEWOOD-ULTRA  DIFFUSER- a new diffuser to those who search balanced sound ambiences With the Wavewood design a new diffuser product arrises. Simulating a QRD and MLS sequence...
Standard finishes available ex stock:     Matt White     Matt Black...
NZ$ 430.00 ea (incl. GST)
Super Bass Extreme is efficient between 60 and 125 Hz and is designed to be positioned in corners. Inside the box, there’s a wooden membrane that the bass waves try to resonate – much like the front...
NZ$ 60.00 ea (incl. GST)
This product can be used together with B00164 Super Bass Extreme and B00624 Super Bass Extreme Premium. If you intend to stack several Super Bass Extreme panels on top of each other,...
NZ$ 130.00 ea (incl. GST)
This product can be used together with Super Bass Extreme and Super Bass Extreme Premium. 
NZ$ 140.00 ea (incl. GST)
Cinema Round Premium panels provide flexible and elegant solutions for sound control across a multitude of applications. Combining modern design with maximum acoustic efficiency, the fabric-covered...
NZ$ 15.00 ea (incl. GST)
Flexi Glue Ultra is one-component glue, plasticiser-free, quick curing sealant and, although it does not have solvents, it has been optimised to have a good initial adhesion. Being a solvent-free...
NZ$ 330.00 ea (incl. GST)
Vicoustic has developed an evolutionary new product range fit for both residential and commercial use. Created exclusively by Vicoustic, Flat Panel VMT is made from VicPET Wool - a material produced...
NZ$ 330.00 ea (incl. GST)
Vicoustic has developed an evolutionary new product range fit for both residential and commercial use. Created exclusively by Vicoustic, Flat Panel VMT is made from VicPET Wool - a material produced...
NZ$ 1,999.00 ea (incl. GST)
 VicTotem represents a new and revolutionary solution for acoustic treatment. VicTotem is a free standing, variable acoustic treatment product which can provide absorption, diffusion ...
VC 09 AP FW60
NZ$ 120.00 ea (incl. GST)
The revolutionary Flexi Wave acoustic panel brings performance and design to our homes. Especially developed to fit in standard clip-in or T-Profile frames, this is the only non square or rectangular...
VC 10 AP FW120
NZ$ 185.00 ea (incl. GST)
The revolutionary Flexi Wave acoustic panel brings performance and design to our homes. Especially developed to fit in standard clip-in or T-Profile frames, this is the only non-square or non-...
NZ$ 299.00 ea (incl. GST)
Made with EuroClass B VicPET Wool, ViCloud offers a simple and lightweight solution to reduce noise levels inside any space. Clouds have been used for years, but they’re usually expensive and...
Price on application
A revolutionary new product range for residential and commercial applications. Developed exclusively by Vicoustic, Flat Panel VMT is made from VicPET Wool - a material produced mainly from recycled...
Price on application
The IsoBlanket is a high density sound blocking membrane, used in the soundproofing of walls, ceilings and floors. It combines up to date technology and flexibility for sound insulation of airborne...
NZ$ 250.00 ea (incl. GST)


feedback on my new Magico A3 speakers and the Vicoustic acoustic products.

Hi Terry,
i think it's about time to give you some feedback on my new Magico A3 speakers and the Vicoustic products.

The Magico A3s have had 120 hours burn-in -time so far, the mid and highs are starting to open up nicely, but I think the lower end still requires a bit more time,  I am really happy with the result. (needs to allow at least 300hrs.... Terry )

Happy to report they work beautifully with my Vitus amp and Accustic Arts Reference front end, its transparent and has great timing, I can't believe the incredible bass coming out of those 2 little 7 inch drivers, image is also great too, the speakers really disappear, I happily sit there listening for hours and hours......

Regarding Vicoustic acoustic treatment, I have installed the 8x SBE-Super Bass Extreme traps in front corners, 10x DC2 diffuser on the front wall and 8x DC2 diffusers on the ceiling. The muddy lower end seems to have cleared up dramatically, and I notice some fine details on bass note that Ive never heard before, the lower end is more in time with the mid and high which results in an intact presentation. Ive also noticed my room also sounds a lot "bigger" than before, especially on classical music, now I can clearly pick up the distant between the violin in front and cello at the back, wonderfu!

Thanks a lot

The DC2s covering the TV screen did the trick very nicely....
Hi Terry,
Thank you for giving me the opportunity to test out different Vicoustics panels. I found each panel type has its own function and benefit depending on your room.
For me, adding DC2 panels to cover the TV additional to the ones I got from you before underneath the TV helped unveil the muddled voice on tracks, especially on live recordings where the voice is supposedly higher than the instruments.

I had to compromise since I am renting and couldn’t remove the TV from where it is so tried gluing the DC2s on a light board with a bracket to cover ithe TV screen when we wernt watching it and it did the trick very nicley.
Looking forward to hearing more when the Wavewood Diffusers arrive.
Thanks again!
"WOW what a huge difference its made..... :)

Our latest VICOUSTIC room acoustic treatment installation.
It's amazing what was achieved even in a small room like this ex bedroom.

Stage 1 included: 8x SBE corner bass traps in the 2 corners with 4x DC2 Multifusers & 4x Wavewood diffusers on wall behind the gear.

Our clients comment: "It not only looks awesome but the improvement of the musical presentation was significant so he is keen for us to carry on with stage 2 asap.

Stage 2 includes: 4x SBE bass traps in LH rear corner (a doorway prevents RH rear corner) & 8x Wavewood diffusers on the side walls to complete the project.

It was so good to see the big smile come on his face when he turned the system on.... it was one of those real "wow" moments....

For those interested the sytem consists of:
Wilsom Benesch Vector floorstand speakers
Ayon Crossfire 300B 30w SE class-A integrated amp
Ayon Stratos DAC
Antipodes EX/CX music server combo
Artesania Exoteryc audio rack
Tellurium Q Silver Diamond speaker & interconnect cables
Gigawatt PC3SE power conditioner and power cables


Vicoustic Academy - Room Acoustics Intensive Training Program